The centrifugal pump conveys food as well as waste water.
Due to its design, the centrifugal pump can be used for a wide range of applications. Depending on the design, it can be used to convey foodstuffs such as milk or wine, but also waste water with solid or chemical impurities.
The different designs of these pumps
Centrifugal pumps are manufactured in the following designs:
Function and design of these pumps
A great advantage of these pumps is their simple, low failure-prone design. They consist of a housing, a drive shaft with an impeller, an inlet nozzle and one or more outlet openings. The size and shape of the casing are determined by the impeller. During operation, the impeller rotates around the drive shaft and thus sets the liquid to be pumped in rotation. It is thereby pressed against the outer walls of the pump and flows out through the outlet openings. The impeller can be open or closed, is usually equipped with blades, but can also be equipped with a cutting device. The more open the impeller is, the better the pump can convey small solids or fibrous particles. The maximum possible size of these particles is approx. 70 mm. If larger impurities are to be conveyed, an impeller with cutting device can be used. It crushes the particles to a manageable size. Closed impeller pumps are much more efficient than open impeller pumps.
Some application examples
The pumps have a typical delivery head of up to 5,000 m. The flow rate reaches up to 60 m³/s. The impeller is often made of stainless steel to withstand higher loads. These pumps are used in agriculture and water management, for example to fill tanks. They are used for drainage in mines and on construction sites. They can be found in heating and cooling systems as circulating pumps. The fire brigade and disaster control also like to use this type of pump.